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Submission #169406

# Submission time Handle Problem Language Result Execution time Memory
169406 2019-12-20T08:48:47 Z AlexLuchianov Gondola (IOI14_gondola) C++14
45 / 100
 69 ms 5112 KB 
#include "gondola.h"
#include <algorithm>
#include <iostream>
#include <map>
#include <vector>

using ll = long long;
#define MIN(a, b) (((a) < (b)) ? (a) : (b))
#define MAX(a, b) (((a) < (b)) ? (b) : (a))

int const nmax = 250000;
int const modulo = 1000000009;

std::map<int, int> frec;

int valid(int n, int inputSeq[])
{
  for(int i = 0; i < n; i++)
    if(inputSeq[i] <= n) {
      std::rotate(inputSeq, inputSeq + (n + i - inputSeq[i] + 1) % n, inputSeq + n);
      break;
    }

  for(int i = 0; i < n; i++) {
    if(frec[inputSeq[i]] == 1)
      return false;

    frec[inputSeq[i]] = 1;
    if(inputSeq[i] <= n && i + 1 != inputSeq[i])
      return false;
  }
  return true;
}

//----------------------
int seen[1 + nmax];

int replacement(int n, int gondolaSeq[], int replacementSeq[]) {
  for(int i = 0; i < n; i++)
    if(gondolaSeq[i] <= n) {
      std::rotate(gondolaSeq, gondolaSeq + (n + i - gondolaSeq[i] + 1) % n, gondolaSeq + n);
      break;
    }

  int smax = 0;
  for(int i = 0; i < n; i++)
    smax = MAX(smax, gondolaSeq[i]);
  int pos = 0;
  for(int i = 0; i < n; i++)
    if(smax == gondolaSeq[i])
      pos = i;

  for(int i = 0;i < n; i++)
    seen[gondolaSeq[i]] = 1 + i;

  for(int i = n + 1; i <= smax; i++)
    if(seen[i] == 0) {
      replacementSeq[i - n - 1] = pos;
      pos = i;
    } else
      replacementSeq[i - n - 1] = seen[i];

  return smax - n;
}

//----------------------

int lgpow(int a, int b){
  if(b == 0)
    return 1;
  else if(b == 1)
    return a;
  else {
    int result = lgpow(a, b / 2);
    if(b % 2 == 0)
      return 1LL * result * result % modulo;
    else
      return 1LL * result * result % modulo * a % modulo;
  }
}

int countReplacement(int n, int inputSeq[])
{
  if(valid(n, inputSeq) == 0)
    return 0;
  else {
    for(int i = 0; i < n; i++)
      if(inputSeq[i] <= n) {
        std::rotate(inputSeq, inputSeq + (n + i - inputSeq[i] + 1) % n, inputSeq + n);
        break;
      }

    std::vector<int> v;
    for(int i = 0; i < n; i++)
      if(n < inputSeq[i] )
        v.push_back(inputSeq[i]);
    std::sort(v.begin(), v.end());

    int last = n;
    int result = 1;
    for(int i = 0; i < v.size(); i++){
      result = 1LL * result * lgpow(v.size() - i, v[i] - 1 - last) % modulo;
      last = v[i];
    }
    return result;
  }
}

Compilation message

gondola.cpp: In function 'int countReplacement(int, int*)':
gondola.cpp:101:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i = 0; i < v.size(); i++){
                    ~~^~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 21 ms 2424 KB Output is correct
7 Correct 13 ms 1144 KB Output is correct
8 Correct 41 ms 4344 KB Output is correct
9 Correct 12 ms 1656 KB Output is correct
10 Correct 51 ms 5112 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 20 ms 2424 KB Output is correct
7 Correct 13 ms 1144 KB Output is correct
8 Correct 41 ms 4344 KB Output is correct
9 Correct 12 ms 1656 KB Output is correct
10 Correct 48 ms 5036 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 7 ms 636 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 14 ms 1144 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 348 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct

Subtask #5
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 408 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Incorrect 2 ms 376 KB Output isn't correct
7 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 380 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Incorrect 2 ms 376 KB Output isn't correct
7 Halted 0 ms 0 KB -

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct

Subtask #8
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 504 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct

Subtask #9
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 380 KB Output is correct
2 Correct 2 ms 504 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 380 KB Output is correct
9 Correct 57 ms 5020 KB Output is correct
10 Correct 42 ms 4212 KB Output is correct
11 Correct 18 ms 1912 KB Output is correct
12 Correct 21 ms 2080 KB Output is correct
13 Incorrect 6 ms 760 KB Output isn't correct

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 352 KB Output is correct
3 Correct 2 ms 252 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 380 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 69 ms 4952 KB Output is correct
10 Correct 44 ms 4216 KB Output is correct
11 Correct 17 ms 1820 KB Output is correct
12 Correct 21 ms 2168 KB Output is correct
13 Incorrect 6 ms 760 KB Output isn't correct
14 Halted 0 ms 0 KB -